JONESBORO, Ark. (AP) - Jonesboro's city utility has completed $4 million in infrastructure improvements to the Craighead Technology Park as a way to help businesses there and attract new ones.

The work was partially funded through state and federal grants awarded in 2009.

The Jonesboro Sun reports (http://is.gd/LQ2efZ ) that an extension of a rail spur opened 400 more acres. Jonesboro has about 750 undeveloped acres in the park that can be used to bring in new industry.

The work includes new electric lines, straightening a road near the Nestle food plant to make it safer, intersection improvements, a road to serve the Nordex wind turbine plant and other ground transportation improvements.